Offset perfecting-machine.



D. 3. SCOTT.

OFFSET PERFECUNG MACHINE.

APFUCATFON mu) SEPT.29. m.

Putentud Oct. SE), MB.

2 SHEETS SHiEI I.

[)a acid J. Scott D. J. SCUTP OFFSET PERFECTENG MACHINE. :m ucwun mw SEPT. 29, Hamv 1 ,283.328. Putentvd 31 Quezon 2 SHE.

Oct. 29, HH

L15 bhLLI UNITED sTA'rEs PATENT orrron.

DAVID JOHN SCOTT, E PLAINFIELD, NEW J EESEY, ASSIGNOB '10 ISABELLA SCOTT AND DAVID J. SCOTT, EXECUTORS OF WALTER SCOTT, DECEASED.

OFFSET 'PERFECTING-MACHINE.

Specification of Letters Patent.

Original application filed April 2, 1915. Serial No. 18,639. Divided and this application flied September 29.

Tool! whom it may concern:

. Be it known that 1, DAVID, J. Soon, a citizen of the United States, and a resident of Plainfield, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Offset Perfecting-Machines, of which the following is a specification.

The present invention relates generally to offset perfecting machines and has more particularly reference to the general arrangement of the printing 'units and ele ments thereof composing such presses.

The present application is a division of one filed on April 2, 1915, Serial No. 18,639.

The main object of the invention is the production of a machine in which both sides of the sheet or web is printed by the offset process and without the omission of elements necessary to produce high class results; and in which the arrangement of cylinders is such that all the wdrking parts will be completely accessible. Another object of the invention is to provide means for conveniently controlling the various instrumentalities that comprise the press.

Accordingly, the invention consists of the features of construction, combination of parts and arrangement of elements, a pre ferred embodiment of which is disclosed in the accompanying drawings. However, changes may be made in the particular form shown herein without departing from the legitimate andintended scope of the invention.

In the drawings:

Figure 1 is a plan view, largely in diagrammatic form, of a machine embodying the invention.

Fig. 2 is a view in elevation, also largely in diagrammatic form, and looking in the direction of the arrow 2 of Fig. 1.

Fig. 3 is a detail view, in elevation, of the first printing couple.

The machine comprises two printing units, each of which consists of a form-carryin cylinder, a blanket or transfer cylinder an an impression cylinder. A indicates the form-carrying cylinderofi the first unit and B the form-carrying cylinder of the second unit, while C is the transfer cylinder of the first unit and D the transfer cylinder of the second unit, and E is the impr ion cylin-d der of the first unit and F the impression cylinder of the secondumt, here shown X to the delivery.

Serial No. 122,836.

the transfer and form-carrying cylinders are preferably arranged one above the other to form an exposed operating side, the impression cylinder being located non-adjacent to said operating side. The two units are arranged substantially at right angles to each other with their operating sides outermost.

I indicates a source of supply of paper in web form and L indicates a delivery mechanism, here shown conveniently as a former folder, said source of supply and said former folder being arranged substantially at right angles to each other and forming together with the two printing cylinders the four sides of square.

The impression receiving material or web X coming from the source I passes across to impression cylinder E of the first unit and around the same and back to turner bar X where it is given a quarter turn and passes thence by way of roller X and X to and around impression cylinder F of the second unit to roller X and thence across to roller The paper, in thus passingto and from impression cylinder F of the second unit, is doubled back upon itself, and intermediate the web runs of this doubled-back portion is located an antismutting device 37 that engages with the surface of the impression cylinder F and prevents the printed side of the web from smutting the surface of said cylinder, it being understood that the web in passing from the impression cylinder E of the first unit to the impression cylinder F of the second unit is reversed so that the printed side of the paper comes against the surface of impression cylinder F.

To render the parts easily accessible, the transfer cylinders are mounted in sliding boxes 5 controlled by a handle 34 so that said transfer cylinders may be moved outwardly of the operating side of the machine and away from their cooperating transfer and impression cylinders. Similarly, if desired, the impression cylinders may be mounted in sliding boxes 54 controlled from handle 35 so as to throw off the impression cylinders from their coiiperating transfer cylinders. The anti-smutting device '37 is mounted upon sliding boxes 54 of impression I Sept. 29, 1916, Serial No. 122,833 as is also the broad idea of interposing the anti-smutting device between the doubled-back pertions of the Web.

".yissociated with each form carrying cyllittler is an inking mechanism 0, and, should the character of the work require it, a dam ening mechanism N may also be employed 1n connection with each form-carrying cylinder. The dampening mechanism N is in each instance located non-adjacent to the operating side of the units and may be with drawn from engagement with its form-carrying cylinder by means of handle 38.

What is claimed, is:

l. A rotary offset perfecting machine com prising: a plurality of units printing from positive forms on opposite sides of impression receiving material, each unit consisting of a form-carrying, a transfer and an impression cylinder all of substantially the same diameter, the form-carrying and transfer cylinders being arranged in an upright column and the impression cylinder being arranged out of line with the other cylinders to afford an exposed operating side for the unit, said units being grouped substantially at right angles to each other with/their operating sides outermost, means for feeding the impression receiving material from an impression cylinder of one unit, thence to the impression cylinder of the other unit, and means for delivering the printed product from the impression cylinder of the second unit, said feeding and delivery means being located to afford unobstructed access to the operating side ofthe units.

2. A rotar offset perfecting machine comprising: a p urality of units printing from positive forms on opposite sides of impression receiving material, each unit consisting of a form-carrying, a transfer and an impression cylin er all of substantially the same diameter, the form-carrying and transfer cylinders being arranged in an upright column and the impression pylinder being arranged out of,line' with the other cylinders to afford an exosed operating side for the unit, said units lieing grouped at right angles to each other with their operating sides outermost, means for feeding the web to the impression cylinder of oneunit, thence to the impression cylinder of the second unit, means for delivering the printed product from the impression cylinder of the second unit, the web in passing to and from the impression cylinder of the second unit being "doubled back upon itself, and an antismuttin'gtl e'vice engaging the impression cylinder of these'cond unit and located intermediate the runs of the web.

3. A-ro'tarvoffset perfecting machine comprisingplurality units rinting from y es of imprespositive for-ms on opposite si sionreciving material, each unit consisting H i 1 of a form-carrying, a transfer and an impression cylinder all of substantially the same diameter, the fornrcarrying and transfer cylinders being arranged in an upright column and the impression cylinder being arranged out of line with the other cylinders to afford an exposed operating side for the unit, said units being grouped substantially at right angles to each other with their. operating sides outermost, means for feeding the impression receiving material from the impression cylinder of one unit, thence to the impression cylinder of the other unit, means for delivering the printed product from the impression cylinder of the second Unit, said feeding and delivering means being located to afford unobstructed access to the operating side of the units, and means for moving the transfer cylinders outwardly with respect to the operating side of the machine and away from the other cylinders of the unit.

4. A rotary offset perfecting machine conr prising:'a plurality of units pr nting from positive forms on opposite sides of impression receiving materianeach unit consisting of a form-carrying, a transfer and an impression cylinder all of substantially the same diameter, the form-carrying and transfer cylinders being arranged in an upright column and the impression cylinder being arranged out of line with the other cylinders to afford an exposed operating side for the unit, said units being grouped substantially at right angles to each other with their operating sides outermost, a source of en ply of impression receiving material and a elivery mechanism arranged substantially at rightangles to each other and forming, with the printing units, the four sides of a square, 10: and means intermediate said units, said source of supply and said delivery for feeding the impression receiving material to the impression cylinder of one unit, transferring it to the impression cylinder of the second 11 unit and thereafter transferring it to the delivery mechanism.

, 5. A rotary offset perfecting machine comprising: a plurality of units printing from positive forms on opposite sides of impres- 11 sion receiving material, each unit consisting of a form-carrying, a.transfer and an impression cylinder all of substantially the same diameter. the formcarrying andtransfer cylinders being arranged in an upright .12 column and the impression cylinder being arranged out of line with the other cylinders to afford an exposed operating side for the unit, said units being grouped substantially at right angles toeach other with their oper- 12 ating sides outermost, a'source of su 1y of impression receiving material and diilivery mechanism arranged substantially at right angles to each 0t er and forming, with he printing units, the four sides 0 a square, 18

means intermediate said units, said source of supply and said delivery for feeding the im pression receiving material to the impression cylinder of one unit, transferrin it to the impression cylinder of the secon unit and thereafter transferring it to the delivery merhnnisni. the impression receiving material in passing to and from the impression cylinder of the second unit being doubled back upon itself, and an anti-smutting device engaging with the impression cylinder of the second unit and located between the web runs to and from said impression cylinder.

Signed at Pleinfield, in the count of 5 Union and State of New Jersey this 27th day of September A. D. 1916.

I DAVID JOHN SCOTT.

Witnesses? CARL E. DRANGE,

J. V. Conn. 

